First performance upgrade?

[Mike K]

Originally Posted by V10 MOJO

everyone has given you good suggestions. just one problem; you didnt say how much loot you wanna spend. thats one of the main factors. hell if you got it, then first upgrade should be a heffenr TT, itll be your first and last upgrade [img]/images/graemlins/supergrin.gif[/img]

(well, youll be doing brakes and halfshafts too hopefully [img]/images/graemlins/supergrin.gif[/img] )

Ha,Ha! [img]/images/graemlins/supergrin.gif[/img] I understand your question. The problem is that I don´t know how much I want to spend.
I need to check some things first, what the market can offer.
First year I will run low power and then turbocharge it.
I got a speedshop here in Sweden and I need a nice "showcar", it´s a Volvo S60R now.

I´ve built some engines now and i just hate the old type of heads (don´t know the name...)

Mvh Mike

[Lucifer]

Originally Posted by Mike K

Is there any DOHC heads to the Viper? Is the original heads good?

/Mike

[img]/images/graemlins/nono[/img]

[Mike K]

Originally Posted by Lucifer

[img]/images/graemlins/nono[/img]

Why? What did I do now?

/Mike

[V10 MOJO]

Mike, so if you plan on TT in future, i would then recommend halfshafts, brakes now. other than that dont waste time on any other performance mods, itll be a waste

[Lucifer]

Originally Posted by Mike K

Why? What did I do now?

/Mike

Ever look at a Viper's engine? [img]/images/graemlins/laughing.gif[/img] It's a standard pushrod V design, you're not going to find dual over head cams. [img]/images/graemlins/supergrin.gif[/img]

[Makara]

VTECH that bad boy, just like the GTS Type-R.

[Mike K]

Originally Posted by Lucifer

Ever look at a Viper's engine? [img]/images/graemlins/laughing.gif[/img] It's a standard pushrod V design, you're not going to find dual over head cams. [img]/images/graemlins/supergrin.gif[/img]

I know that´s not original, I just wanted to hear if it´s on the market.
I saw very nice V8 DOHC to Chevy SB, raceheads.

Regards Mike

[Lucifer]

Originally Posted by Mike K

I know that´s not original, I just wanted to hear if it´s on the market.
I saw very nice V8 DOHC to Chevy SB, raceheads.

Regards Mike

Could someone even explain to me how that would be possible? What would you do with the cam in it's stock location? How about the pushrods and rockers? I think I had better grab my shovel. [img]/images/graemlins/yes[/img]

[BigCarrot]

I did see some sb chevy heads with four valves per cylinder one time, but DOHC just aint happenin on either one. Obvious reasons.

[BigCarrot]

Check these out. If I had a sb CHevy, I'd definitely look at these! http://www.araoengineering.com/Chevy/chevysmb.htm

[Mike K]

Originally Posted by Lucifer

Could someone even explain to me how that would be possible? What would you do with the cam in it's stock location? How about the pushrods and rockers? I think I had better grab my shovel. [img]/images/graemlins/yes[/img]

The stock cams are replaced with plugs or still mounted.
The pushrods and rockers goes in the trash, in a DOCH-head you don´t use them.
I think this was the way on the V8 I saw.

Sorry, got bad technical english.. [img]/images/graemlins/sad[/img]

Regards Mike

[Thin Man]

You could retro-fit DOHC heads onto any pushrod engine... but the fabrication cost would be astronomical....... there is actually a start-up company out there with an idea to convert pushrod engines to "rotary valve" engines.


It's possible.... check it out.


http://www.roton-engines.com/

[Jerome]

You really don't need to go DOHC when you can go to 4 valve per cylinder. This with the cam still in the block. All the benefits of DOHC without all the added complexity and added valvetrain mass.

This was done some years ago on a Top Fuel engine. It was made illegal very quickly too.

Now who has so much money they want to be the first to do this on a Viper engine?

[BigCarrot]

Those heads kick ass, huh?

[Jerome]

Originally Posted by BigCarrot

Those heads kick ass, huh?

Well the NHRA did not want them around very long. Those engines make more power than can ever be used with only 2 valves per. And adding 4 valve per cyl just made them more of a short fused demon.

[Mike K]

Nice answers, thanks!

A guy here custom-make heads and cams. It cost about $25.000. [img]/images/graemlins/sad[/img]
2 valve feels old but it sure works, Vipers are fast!

Does the Viper got strong rods and pistons? No problems?
When you say half-shaft, do you mean drive-shafts?

Regards Mike